nsStubMutationObserver.h

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- *//* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is nsStubMutationObserver. * * The Initial Developer of the Original Code is the Mozilla Foundation. * Portions created by the Initial Developer are Copyright (C) 2006 * the Initial Developer. All Rights Reserved. * * Contributor(s): * L. David Baron <dbaron@dbaron.org> (original author) * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** *//* * nsStubMutationObserver is an implementation of the nsIMutationObserver * interface (except for the methods on nsISupports) that is intended to be * used as a base class within the content/layout library. All methods do * nothing. */#ifndef nsStubMutationObserver_h_#define nsStubMutationObserver_h_#include "nsIMutationObserver.h"/** * There are two advantages to inheriting from nsStubMutationObserver * rather than directly from nsIMutationObserver: * 1. smaller compiled code size (since there's no need for the code * for the empty virtual function implementations for every * nsIMutationObserver implementation) * 2. the performance of document's loop over observers benefits from * the fact that more of the functions called are the same (which * can reduce instruction cache misses and perhaps improve branch * prediction) */00061class nsStubMutationObserver : publicnsIMutationObserver {
NS_DECL_NSIMUTATIONOBSERVER
};
#endif /* !defined(nsStubMutationObserver_h_) */